Number | Name | Date | Kind |
---|---|---|---|
3559734 | Pitts | Feb 1971 | |
3981360 | Marathe | Sep 1976 | |
4621655 | Roche | Nov 1986 | |
4832126 | Roche | May 1989 | |
5826658 | Harthorn et al. | Oct 1998 |
Number | Date | Country |
---|---|---|
1591319 | Aug 1977 | GBX |
WO 9635857 A1 | May 1996 | WOX |
Entry |
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"Subsea Riser Systems", Cooper Cameron pages (4) (undated). |
"Riser Auto Fill Valve", 1996-7 Composite Catalog, p. 107, ABR Vetco Advertisement. |
Hughes Offshore publication entitled "Automatic Riser Fill Valve--Regan Type FC" (4 pages) dated Nov. 21, 1981. |